<!DOCTYPE html>
<html lang="zh_CN">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

</body>
<script type="text/javascript">
    var a = 1;
    var b = 2;
    var c = a + b;

    console.time('for')
    for (var i = 0; i < 10000000; i++) {
        console.log(i);
    }
    console.timeEnd('for');

    console.log(c);


</script>

</html>
